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16 September 2011 Characterization and measurements collected from Infrared Grazing Angle Reflectometer
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Abstract
The Infrared Grazing Angle Reflectometer (IGAR) measures the Directional Hemispherical Reflectance (DHR) of samples at infrared wavelengths and at angles close to grazing incidence. While other devices measure DHR at or near normal, IGAR makes measurements with the angle of incidence ranging from 30 to 85 degrees. IGAR is equipped with a tunable laser source, allowing DHR measurements at wavelengths from 9.2 to 10.7m. Additional lasers can be easily added, and future plans include integrating our tunable external cavity quantum cascade lasers, extending our wavelength range from 4.3 to 9.7 microns. IGAR utilizes a hemi-elliptical mirror and a five-sided pyroelectric detector to measure DHR. By using this setup, IGAR can make low noise measurements while still capturing all of the reflected light. Our future sample set includes infrared material standards such as infragold, carbon nanotubes, as well as nanostructured devices, and various layered media.
© (2011) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Michael R. Benson, Michael A. Marciniak, and Jeffrey W. Burks "Characterization and measurements collected from Infrared Grazing Angle Reflectometer", Proc. SPIE 8154, Infrared Remote Sensing and Instrumentation XIX, 81541B (16 September 2011); https://doi.org/10.1117/12.893753
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